Internet of Things for Architects

Vision system

In contrast with the simple sensors explored earlier, vision systems are much more complex, which results in substantial hardware, optics, and imaging silicon. Vision systems start with a lens that observes a scene. A lens provides focus, but also provides more light saturation to the sensing element. In modern vision systems, one of two types of sensing elements is used: charge-coupled devices (CCD), or complementary metal-oxide (CMOS) devices.  The difference between CMOS and CCD can be generalized as:

• CCD: Charge is transported from the sensor to the edge of the chip to be sampled sequentially via an analog-to-digital converter. CCDs create high-resolution and low-noise images. They consume considerable power (100x that ...